Skip to content
OEM & Performance ATV, UTV & Dirt Bike Parts for Yamaha, Honda, Polaris, Can-Am & More — Shipped Fast from BPRATV
OEM & Performance ATV, UTV & Dirt Bike Parts for Yamaha, Honda, Polaris, Can-Am & More — Shipped Fast from BPRATV

Honda TRX400EX

Honda 400EX Rebuild Kits, Pistons, and Parts

Filters

$
$
Save 14% Save %
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$872.56
$872.56 - $872.56
$872.56

Honda 400EX 400X 87mm 416cc 12.5:1 CP Piston Big Bore Cylinder Stage 2 Hot Cams

BPRATV
Low stock

1043-2, M2008, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13...

View full details
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$872.56
$872.56 - $872.56
$872.56
Save 14% Save %
Save 14% Save %
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$872.56
$872.56 - $872.56
$872.56

BPRATV TRX400EX 400EX 87mm 12.5 CP Piston Big Bore Cylinder Stage 2 Hot Cam Kit

BPRATV
Low stock

1043-2,M2008,M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 1311...

View full details
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$872.56
$872.56 - $872.56
$872.56
Save 14% Save %
Save 13% Save %
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$888.88
$888.88 - $888.88
$888.88

85mm Cylinder 10:1 CP Piston Gasket Stage 2 Cam Top Rebuild Kit For Honda 400EX

BPRATV
Low stock

1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$1,017.88
$1,017.88 - $1,017.88
$1,017.88
$888.88
$888.88 - $888.88
$888.88
Save 13% Save %
Save 6% Save %
$834.95
$834.95 - $834.95
$834.95
$788.88
$788.88 - $788.88
$788.88

99-14 Honda 400EX 400 EX Top End Cylinder Kit 10:1 CP Piston Stage 1 Hotcams Kit

BPRATV
Low stock

1043-2, M2002,M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-6...

View full details
$834.95
$834.95 - $834.95
$834.95
$788.88
$788.88 - $788.88
$788.88
Save 6% Save %
Save 13% Save %
$925.35
$925.35 - $925.35
$925.35
$802.33
$802.33 - $802.33
$802.33

Honda 400EX 400X 87mm 416cc CP 11 Pump Gas Big Bore Cylinder Stage 2 Hot Cam Kit

BPRATV
Low stock

Honda 400EX 400X 87mm 416cc CP 11 Pump Gas Big Bore Cylinder Stage 2 Hot Cam Kit ...

View full details
$925.35
$925.35 - $925.35
$925.35
$802.33
$802.33 - $802.33
$802.33
Save 13% Save %
Save 22% Save %
$500.49
$500.49 - $500.49
$500.49
$388.88
$388.88 - $388.88
$388.88

Honda 400EX 400X XR400 Top End Rebuild Kit CP 11:1 Piston Gaskets Cylinder NGK🔥

BPRATV
Low stock

Complete 85mm Stock / Standard Bore Top End Rebuild Kit With CP Carrillo Piston and Cometic GasketsThe best rebuild kit on the market should have a...

View full details
$500.49
$500.49 - $500.49
$500.49
$388.88
$388.88 - $388.88
$388.88
Save 22% Save %
Save 33% Save %
$1,039.99
$1,039.99 - $1,039.99
$1,039.99
$699.98
$699.98 - $699.98
$699.98

99-04 400EX 400 EX 85mm Simple Rebuild Kit Wossner Piston Complete Gaskets Seals

BPRATV
Low stock

Honda TRX 400EX 400X Simple Rebuild Kit (OEM Stock Bore 85mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say ...

View full details
$1,039.99
$1,039.99 - $1,039.99
$1,039.99
$699.98
$699.98 - $699.98
$699.98
Save 33% Save %
Save 33% Save %
$1,039.99
$1,039.99 - $1,039.99
$1,039.99
$699.98
$699.98 - $699.98
$699.98

05-14 400EX 400 EX 85mm Simple Rebuild Kit Wossner Piston Complete Gaskets Seals

BPRATV
Low stock

Honda TRX 400EX 400X Simple Rebuild Kit (OEM Stock Bore 85mm) We've heard your feedback! Some of our kits are Too Complete. We mean it when we say ...

View full details
$1,039.99
$1,039.99 - $1,039.99
$1,039.99
$699.98
$699.98 - $699.98
$699.98
Save 33% Save %
Sold out
$881.99
$881.99 - $881.99
$881.99
$836.78
$836.78 - $836.78
$836.78

TRX400EX TRX 400EX Stage 3 Hotcam Kibblewhite Valve Spring Complete Head Rebuild

BPRATV
Out of stock

FITS ALL HONDA TRX400EX TRX400X AND XR400R YEARS AND MODELS   COMPLETE HEAD REBUILD KIT! Stage 3 Hotcam Cam bearings Rocker arms Rocker arm shaft...

View full details
$881.99
$881.99 - $881.99
$881.99
$836.78
$836.78 - $836.78
$836.78
Sold out
Save 5% Save %
$875.99
$875.99 - $875.99
$875.99
$828.98
$828.98 - $828.98
$828.98

TRX400EX TRX 400EX 89mm Big Bore Stage 3 Hotcam Camshaft 440 Top End Rebuild Kit

BPRATV
In stock

4794M08900,C7826,12100-KCY-670,208552,1051-3,3P-440,C7826-EST,HC92RH2015112,DPR8Z,, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826...

View full details
$875.99
$875.99 - $875.99
$875.99
$828.98
$828.98 - $828.98
$828.98
Save 5% Save %
Save 11% Save %
$999.99
$999.99 - $999.99
$999.99
$888.88
$888.88 - $888.88
$888.88

TRX400EX TRX 400EX 88mm Big Bore Stage 2 Cam Kibblewhite Valves 426 Top End Kit

BPRATV
In stock

1043-2, M2008, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$999.99
$999.99 - $999.99
$999.99
$888.88
$888.88 - $888.88
$888.88
Save 11% Save %
Sold out
$299.97
$299.97 - $299.97
$299.97
$211.97
$211.97 - $211.97
$211.97

Honda 400EX 400X 89mm Piston Wiseco Big Bore +4 Over Piston Cometic Gasket Kit

BPRATV
Out of stock

Works on all Honda 400EX, 400X, and XR400R models and years Wiseco 89mm big bore forged piston Nitrite coated piston rings Chrome wristpin Circli...

View full details
$299.97
$299.97 - $299.97
$299.97
$211.97
$211.97 - $211.97
$211.97
Sold out
$649.99 - $649.99
$649.99
$688.88
$688.88 - $688.88
$688.88

TRX 400EX 400X XR 89 mil Big Bore Kit +4 Cylinder Hi Comp Top End Rebuild Hotcam

BPRATV
In stock

FITS ALL HONDA 400EX 400X XR400 MODELS AND YEARS NEW aftermarket 89mm big bore cylinder Wiseco or CP forged piston** The piston is hi comp RAC...

View full details
$649.99 - $649.99
$649.99
$688.88
$688.88 - $688.88
$688.88
Save 1% Save %
$1,154.99
$1,154.99 - $1,154.99
$1,154.99
$1,139.49
$1,139.49 - $1,139.49
$1,139.49

TRX 400EX 400X Assembled Head Assembly Stage 2 Hot Cam Chain Hotcam Camshaft Kit

BPRATV
In stock

FITS ALL XR400R TRX400EX and TRX400X MODELS New aftermarket cylinder head and valve cover Stage 2 Hotcams camshaft HD cam chain conversion SKF cam...

View full details
$1,154.99
$1,154.99 - $1,154.99
$1,154.99
$1,139.49
$1,139.49 - $1,139.49
$1,139.49
Save 1% Save %
Save 20% Save %
$1,099.99
$1,099.99 - $1,099.99
$1,099.99
$875.00
$875.00 - $875.00
$875.00

TRX 400EX 400X XR 88m Big Bore Stage 3 Hotcam Valve Springs +3 Top End Kit 426cc

BPRATV
In stock

Compatible Vehicles Submodel Year Make Model TRX400EX 2x4 2008 Honda Sportrax 400 TRX400EX 2x4 2007 Honda Sportrax 400 TRX400EX 2x4 200...

View full details
$1,099.99
$1,099.99 - $1,099.99
$1,099.99
$875.00
$875.00 - $875.00
$875.00
Save 20% Save %
Save 6% Save %
$1,799.99
$1,799.99 - $1,799.99
$1,799.99
$1,699.99
$1,699.99 - $1,699.99
$1,699.99

05+ 400EX 400X 87mm Big Bore Rebuild Kit Top Bottom End Motor Engine Repair Redo

BPRATV
In stock

Works on all 2005+ Honda 400EX and 400X models 87mm big bore cylinder 87mm big bore Wiseco or Wossner forged piston Nitrite-coated piston rings C...

View full details
$1,799.99
$1,799.99 - $1,799.99
$1,799.99
$1,699.99
$1,699.99 - $1,699.99
$1,699.99
Save 6% Save %
Save 23% Save %
$149.99
$149.99 - $149.99
$149.99
$114.99
$114.99 - $114.99
$114.99

400X 400EX Titanium Cylinder Head Studs Ti Stud Upgrade Performance Kit Set

BPRATV
In stock

All Grade 5 Titanium alloy stud and nut kit No case or cylinder machining required Heat treated, allen head studs 12 point flange nuts and 3mm wa...

View full details
$149.99
$149.99 - $149.99
$149.99
$114.99
$114.99 - $114.99
$114.99
Save 23% Save %
Sold out
$461.99
$461.99 - $461.99
$461.99
$349.99
$349.99 - $349.99
$349.99

400EX 400X XR400 Top End Rebuild Kit Stock Cylinder Piston Upper Assembly Parts

BPRATV
Out of stock

Works on all Honda 400EX 400X and XR400R models and years NEW aftermarket cylinder Forged Wiseco or Wossner piston** Hi temp piston rings Chrome w...

View full details
$461.99
$461.99 - $461.99
$461.99
$349.99
$349.99 - $349.99
$349.99
Sold out
$494.06 - $494.06
$494.06
$494.06 - $494.06
$494.06

2005 TRX 400EX Bottom End Rebuild Kit Hotrods Crank Lower Motor Engine Assembly

BPRATV
In stock

FITS ALL 2005+ HONDA 400EX MODELS Hotrods replacement crankshaft with rod assembled SKF heavy duty replacement crank bearings Complete gasket kit...

View full details
$494.06 - $494.06
$494.06
$494.06 - $494.06
$494.06
$895.00 - $895.00
$895.00
$895.00
$895.00 - $895.00
$895.00

400EX 400X Cylinder Head Rebuild Kit Stage 2 Hotcam Kibblewhite Valve Cover

BPRATV
In stock

FITS ALL HONDA 400EX 400X AND XR400R MODELS AND YEARS!! Aftermarket cylinder head with valve cover Stage 2 Hotcam Cam bearings HD timing chain c...

View full details
$895.00 - $895.00
$895.00
$895.00
$895.00 - $895.00
$895.00
$284.54 - $284.54
$284.54
$284.54 - $284.54
$284.54

CP Carrillo Honda XR400R 400X 96-16 TRX400EX 11:1 85mm STD Bore Piston Kit M2003

BPRATV
Low stock

CP-Carrillo 96-09 Honda XR400R 96-16 TRX 400EX 11:1 85mm STD Bore Piston Kit CP Carrillo Part # M2003 (Includes Rings, Wristpin, and Circlips)85m...

View full details
$284.54 - $284.54
$284.54
$284.54 - $284.54
$284.54
Sold out
$99.99 - $99.99
$99.99
$99.99 - $99.99
$99.99

Scott Moto Black Grips ATV PWC BMX Handle Bar Grip Set Black YFZ450 TRX450 400EX

BPRATV
Out of stock

Enhance your off-road experience with the Scott Moto Black Grips ATV PWC BMX Handle Bar Grip SetUpgrade your off-road ride with the Scott Moto Blac...

View full details
$99.99 - $99.99
$99.99
$99.99 - $99.99
$99.99
Sold out
$1,299.99 - $1,299.99
$1,299.99
$1,299.99 - $1,299.99
$1,299.99

2005+ TRX 400EX 400X 89mm Big Bore Rebuild Kit +4 Complete 440 Stage 2 Hot Cams

BPRATV
In stock

FITS ALL '05+ TRX400EX and TRX400X MODELS 89mm after market cylinder Wiseco CP or JE 89mm forged piston**  Nitrite coated piston rings Chrome wris...

View full details
$1,299.99 - $1,299.99
$1,299.99
$1,299.99 - $1,299.99
$1,299.99
$768.99 - $768.99
$768.99
$768.99 - $768.99
$768.99

05–14 Honda TRX 400EX/X 87mm Big Bore Engine Rebuild Kit 11:1 CP Piston & Crank

BPRATV
Low stock

WPC131A, 4606M08700, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

View full details
$768.99 - $768.99
$768.99
$768.99 - $768.99
$768.99
Save 13% Save %
$1,599.99
$1,599.99 - $1,599.99
$1,599.99
$1,388.88
$1,388.88 - $1,388.88
$1,388.88

1999-2004 Honda TRX 400EX 440 Big Bore Complete Rebuild Kit Stage 3 Hot Cams Cam

BPRATV
In stock

Complete Honda TRX400EX 440 big bore engine rebuild kit with forged piston, Hot Rods crankshaft, Stage 3 Hotcam, clutch kit, bearings, seals and ga...

View full details
$1,599.99
$1,599.99 - $1,599.99
$1,599.99
$1,388.88
$1,388.88 - $1,388.88
$1,388.88
Save 13% Save %
Save 13% Save %
$1,199.99
$1,199.99 - $1,199.99
$1,199.99
$1,048.88
$1,048.88 - $1,048.88
$1,048.88

05+ Honda TRX 400EX 400X Complete Engine Rebuild Kit Top Bottom End Crank Piston

BPRATV
In stock

Complete top and bottom end rebuild kit for 2005+ Honda TRX400EX and 400X. Includes forged piston, crankshaft, bearings, seals, clutch kit and tita...

View full details
$1,199.99
$1,199.99 - $1,199.99
$1,199.99
$1,048.88
$1,048.88 - $1,048.88
$1,048.88
Save 13% Save %
Save 13% Save %
$1,199.99
$1,199.99 - $1,199.99
$1,199.99
$1,048.88
$1,048.88 - $1,048.88
$1,048.88

05+ TRX 400EX 400X Rebuild Kit Complete Top Bottom End Motor Engine Assembly Set

BPRATV
In stock

Complete top and bottom end rebuild kit for 2005+ Honda TRX400EX and 400X. Includes forged piston, crankshaft, bearings, seals, clutch kit and tita...

View full details
$1,199.99
$1,199.99 - $1,199.99
$1,199.99
$1,048.88
$1,048.88 - $1,048.88
$1,048.88
Save 13% Save %
Save 13% Save %
$1,199.99
$1,199.99 - $1,199.99
$1,199.99
$1,048.88
$1,048.88 - $1,048.88
$1,048.88

2005+ TRX 400EX 400X Full Top Bottom End Engine Rebuild Set Forged Piston Crank

BPRATV
In stock

Complete top and bottom end rebuild kit for 2005+ Honda TRX400EX and 400X. Includes forged piston, crankshaft, bearings, seals, clutch kit and tita...

View full details
$1,199.99
$1,199.99 - $1,199.99
$1,199.99
$1,048.88
$1,048.88 - $1,048.88
$1,048.88
Save 13% Save %
Save 6% Save %
$79.95
$79.95 - $79.95
$79.95
$74.95
$74.95 - $74.95
$74.95

Honda TRX400EX 400X XR400 Hot Cams Cam Chain HC82RH2010112 Hotcams TRX 400EX Cam

BPRATV
In stock

HC82RH2010112,CC004,14401-KCY-671,31.1496,SCA0409SV112Hot Cams, Direct OEM Replacement Cam Chain For Honda XR400R ’96-04 / TRX400EX / X ’99-14 A cr...

View full details
$79.95
$79.95 - $79.95
$79.95
$74.95
$74.95 - $74.95
$74.95
Save 6% Save %
Sold out
$303.39
$303.39 - $303.39
$303.39
$257.88
$257.88 - $257.88
$257.88

05-14 Honda TRX 400EX Wiseco Heavy Duty Forged Clutch Basket Fibers Spring Steel

BPRATV
Out of stock

Wiseco, WPP3043, 22100-HN1-A40, 22201-MAL-600, 22321-MV4-000, 22401-HN1-000, Upgrade your 05-14 (Honda TRX400EX/400X with a Wiseco Forged Clutch Ba...

View full details
$303.39
$303.39 - $303.39
$303.39
$257.88
$257.88 - $257.88
$257.88
Sold out
Sold out
$303.39
$303.39 - $303.39
$303.39
$257.88
$257.88 - $257.88
$257.88

05-14 Honda TRX 400EX Wiseco Heavy Duty Forged Clutch Basket Fibers Spring Steel

BPRATV
Out of stock

Wiseco, WPP3043, 22100-HN1-A40, 22201-MAL-600, 22321-MV4-000, 22401-HN1-000, Upgrade your 05-14 (Honda TRX400EX/400X with a Wiseco Forged Clutch Ba...

View full details
$303.39
$303.39 - $303.39
$303.39
$257.88
$257.88 - $257.88
$257.88
Sold out
Sold out
$303.39
$303.39 - $303.39
$303.39
$257.88
$257.88 - $257.88
$257.88

New Wiseco WPP3043 Forged Clutch Basket Kit Honda TRX400EX 400X 05-14 BPRATV Kit

BPRATV
Out of stock

Wiseco, WPP3043, 22100-HN1-A40, 22201-MAL-600, 22321-MV4-000, 22401-HN1-000, Upgrade your 05-14 (Honda TRX400EX/400X with a Wiseco Forged Clutch Ba...

View full details
$303.39
$303.39 - $303.39
$303.39
$257.88
$257.88 - $257.88
$257.88
Sold out
Save 20% Save %
$36.00
$36.00 - $36.00
$36.00
$28.81
$28.81 - $28.81
$28.81

BPRATV Valve Cotters Honda Sportrax 400EX XR400R TRX400X 14781-HA0-770 1996-2014

BPRATV
In stock

Honda OEM, 14781-HA0-770, XC110, 519-CVV2220C, Secure your Honda's valvetrain with BPRATV's Valve Keeper Cotters Set of 8! Direct OEM replacement f...

View full details
$36.00
$36.00 - $36.00
$36.00
$28.81
$28.81 - $28.81
$28.81
Save 20% Save %
Save 20% Save %
$36.00
$36.00 - $36.00
$36.00
$28.81
$28.81 - $28.81
$28.81

TRX400EX 400X XR400R Valve Keeper Cotters Set Replaces Honda OEM # 14781-HA0-770

BPRATV
In stock

Honda OEM, 14781-HA0-770, XC110, 519-CVV2220C, Secure your Honda's valvetrain with BPRATV's Valve Keeper Cotters Set of 8! Direct OEM replacement f...

View full details
$36.00
$36.00 - $36.00
$36.00
$28.81
$28.81 - $28.81
$28.81
Save 20% Save %
Save 10% Save %
$444.68
$444.68 - $444.68
$444.68
$398.88
$398.88 - $398.88
$398.88

TRX400EX XR400R 87mm 416 Big Bore Top End Rebuild Kit Wiseco Cometic Gaskets Kit

BPRATV
In stock

1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$444.68
$444.68 - $444.68
$444.68
$398.88
$398.88 - $398.88
$398.88
Save 10% Save %
Save 10% Save %
$444.68
$444.68 - $444.68
$444.68
$398.88
$398.88 - $398.88
$398.88

Honda XR400 TRX400EX 87mm 416cc Big Bore Top End Rebuild Kit Wiseco Cometic NEW!

BPRATV
In stock

1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$444.68
$444.68 - $444.68
$444.68
$398.88
$398.88 - $398.88
$398.88
Save 10% Save %
Save 10% Save %
$1,445.99
$1,445.99 - $1,445.99
$1,445.99
$1,299.99
$1,299.99 - $1,299.99
$1,299.99

Honda TRX400EX 89mm Big Bore Stroker 465cc Crank Piston Motor Engine Rebuild Kit

BPRATV
Low stock

4240, CBK0037, 4040, DPR8Z, WPC131A, WPC131B, CBK0016, TBK0012, K014, 3011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, 122...

View full details
$1,445.99
$1,445.99 - $1,445.99
$1,445.99
$1,299.99
$1,299.99 - $1,299.99
$1,299.99
Save 10% Save %
Save 13% Save %
$21.77
$21.77 - $21.77
$21.77
$18.88
$18.88 - $18.88
$18.88

Cylinder Head Valve Cover Metal Gasket for Honda TRX 400EX XR 400R 12391-KCY-671

BPRATV
In stock

12391-KCY-671,VC03201,XG119,CRUGVKCY,C7826, C7825, 12251-KCY-671, 12191-KCY-671, 91302-356-000, 18291-MN5-650, 14523-KBB-901, 91301-200-000, 91306-...

View full details
$21.77
$21.77 - $21.77
$21.77
$18.88
$18.88 - $18.88
$18.88
Save 13% Save %
Save 30% Save %
$699.99
$699.99 - $699.99
$699.99
$489.98
$489.98 - $489.98
$489.98

TRX400EX TRX 400EX Big Bore 89mm 440cc 12.5 Wiseco Piston Top Engine Rebuild Kit

BPRATV
In stock

247612, 4667M08900, 4794M08900,1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY...

View full details
$699.99
$699.99 - $699.99
$699.99
$489.98
$489.98 - $489.98
$489.98
Save 30% Save %
Save 30% Save %
$1,129.99
$1,129.99 - $1,129.99
$1,129.99
$789.99
$789.99 - $789.99
$789.99

05-14 400EX 400 EX 88mm Simple Rebuild Kit Wiseco Piston Complete Gaskets Seals

BPRATV
In stock

WPC131A, 4606M08800, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

View full details
$1,129.99
$1,129.99 - $1,129.99
$1,129.99
$789.99
$789.99 - $789.99
$789.99
Save 30% Save %
Save 23% Save %
$636.97
$636.97 - $636.97
$636.97
$489.98
$489.98 - $489.98
$489.98

TRX400EX TRX 400EX 89mm 440cc Big Bore Race Gas Hi-Comp 12.5 Piston Top End Kit

BPRATV
Low stock

Upgrade your Honda TRX400EX with a complete 440cc big bore kit featuring an 89mm cylinder, forged 12.5:1 piston, Cometic gaskets, titanium studs, a...

View full details
$636.97
$636.97 - $636.97
$636.97
$489.98
$489.98 - $489.98
$489.98
Save 23% Save %
Sold out
$765.20
$765.20 - $765.20
$765.20
$688.89
$688.89 - $688.89
$688.89

TRX 400EX 400X Stock Bore Cylinder 85 mil Piston Top End Rebuild Stage 1 Hotcams

BPRATV
Out of stock

1007-1, M2008, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, 1043-2,C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 131...

View full details
$765.20
$765.20 - $765.20
$765.20
$688.89
$688.89 - $688.89
$688.89
Sold out
Save 27% Save %
$1,019.99
$1,019.99 - $1,019.99
$1,019.99
$744.44
$744.44 - $744.44
$744.44

99-04 Honda 400EX 89mm Big Bore Cylinder Crank Wiseco Piston Engine Rebuild Kit

BPRATV
Low stock

WPC131A, 4667M08900, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

View full details
$1,019.99
$1,019.99 - $1,019.99
$1,019.99
$744.44
$744.44 - $744.44
$744.44
Save 27% Save %
Save 31% Save %
$1,009.99
$1,009.99 - $1,009.99
$1,009.99
$699.98
$699.98 - $699.98
$699.98

99-04 Honda TRX400EX 88mm 426 Big Bore Cylinder Wiseco Piston Engine Rebuild Kit

BPRATV
In stock

WPC131A, 4606M08800, CBK0080, C7826, K014, B5047,4040, K014, B5047,4040, C7825, 808894, 822278, 4040, CBK0016, C7826, 12100-KCY-670, 4606M08500, C7...

View full details
$1,009.99
$1,009.99 - $1,009.99
$1,009.99
$699.98
$699.98 - $699.98
$699.98
Save 31% Save %
$386.78 - $386.78
$386.78
$388.88
$388.88 - $388.88
$388.88

Honda 400X 400EX XR 400R Top End Cylinder Top Rebuild Kit 10.5 JE Piston Gaskets

BPRATV
Low stock

1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$386.78 - $386.78
$386.78
$388.88
$388.88 - $388.88
$388.88
$386.78 - $386.78
$386.78
$388.88
$388.88 - $388.88
$388.88

TRX400EX 400EX 400X 85mm Bore Cylinder JE Piston Cometic Gaskets Top Rebuild Kit

BPRATV
Low stock

1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$386.78 - $386.78
$386.78
$388.88
$388.88 - $388.88
$388.88
Save 30% Save %
$605.79
$605.79 - $605.79
$605.79
$424.44
$424.44 - $424.44
$424.44

TRX400EX 400X 89mm Big Bore Cylinder 10.8 JE Piston Cometic Top End Rebuild Kit

BPRATV
Low stock

1043-2, M2002, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-...

View full details
$605.79
$605.79 - $605.79
$605.79
$424.44
$424.44 - $424.44
$424.44
Save 30% Save %
Sold out
$461.99
$461.99 - $461.99
$461.99
$338.88
$338.88 - $338.88
$338.88

TRX 400EX 400X XR400 Stock Bore Cylinder 85mm Rebuilt Top End Rebuild Kit Parts

BPRATV
Out of stock

M2002,4606M08500,12100-KCY-670, 4606M08500, C7825, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12...

View full details
$461.99
$461.99 - $461.99
$461.99
$338.88
$338.88 - $338.88
$338.88
Sold out

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare